NR 566 ADVANCED PHARMACOLOGY FOR
CARE OF THE FAMILY – MIDTERM
COMPREHENSIVE EXAM PRACTICE QUESTIONS
WITH 200 VERIFIED QUESTIONS AND VERIFIED
ANSWERS PLUS RATIONALE | ALREADY
GRADED A+ | GUARANTEED PASS || MOST
RECENT
1. Which antifungal agent requires a patient to avoid simvastatin due to the
risk of rhabdomyolysis from CYP3A4 inhibition?
• A. Fluconazole
• B. Itraconazole
• C. Terbinafine
• D. Griseofulvin
Answer: B. Itraconazole
Rationale: Itraconazole potently inhibits CYP3A4, which can significantly increase
plasma concentrations of simvastatin, leading to myopathy and rhabdomyolysis .
2. What is the standard loading dose for caspofungin when treating invasive
aspergillosis?
• A. 50 mg
• B. 70 mg
• C. 100 mg
• D. 150 mg
Answer: B. 70 mg
Rationale: A loading dose of 70 mg is recommended for caspofungin to achieve
therapeutic concentrations quickly, followed by a 50 mg maintenance dose .
,3. Why might an elderly patient with achlorhydria have reduced absorption of
standard itraconazole formulations?
• A. Itraconazole requires an acidic environment for dissolution
• B. Achlorhydria increases renal clearance
• C. Gastric acid destroys itraconazole
• D. Achlorhydria induces CYP3A4 enzymes
Answer: A. Itraconazole requires an acidic environment for dissolution
Rationale: Standard itraconazole capsules require gastric acid for proper dissolution
and absorption. Patients with achlorhydria or those taking proton pump inhibitors
(PPIs) may have subtherapeutic drug levels .
4. Which statement best explains why amphotericin B must be given
intravenously for systemic mycoses?
• A. It is rapidly metabolized by the liver when taken orally.
• B. It is poorly absorbed from the gastrointestinal tract.
• C. It is inactivated by gastric acid.
• D. It causes severe esophageal irritation when swallowed.
Answer: B. It is poorly absorbed from the gastrointestinal tract.
Rationale: Amphotericin B has very poor GI absorption, so therapeutic serum levels
for systemic infections can only be achieved with IV administration .
5. Which intervention most effectively reduces the risk of amphotericin B–
induced nephrotoxicity?
• A. Premedicating with acetaminophen
• B. Administering the drug by rapid IV bolus
• C. Infusing 1 liter of normal saline on days of treatment
• D. Giving a loop diuretic before each dose
Answer: C. Infusing 1 liter of normal saline on days of treatment
Rationale: Saline loading (pre- and post-hydration) is the most effective strategy to
reduce the risk of amphotericin B-induced nephrotoxicity .
,6. A patient being treated with IV acyclovir develops rising creatinine and
decreased urine output. What is the priority nursing action?
• A. Hold the dose and notify the prescriber.
• B. Slow the infusion rate to 30 minutes.
• C. Administer a loop diuretic.
• D. Switch to oral acyclovir immediately.
Answer: A. Hold the dose and notify the prescriber.
Rationale: IV acyclovir carries a risk of renal failure. Worsening renal function
warrants holding the drug and contacting the prescriber for possible dose
adjustment .
7. Which infection is routinely treated with high-dose oral acyclovir in
immunocompetent older adults?
• A. Herpes labialis
• B. Herpes zoster (shingles)
• C. Respiratory syncytial virus
• D. Influenza A
Answer: B. Herpes zoster (shingles)
Rationale: High-dose oral acyclovir is used for varicella-zoster infections such as
shingles in immunocompetent adults. IV therapy is reserved for
immunocompromised patients .
8. Which statement best describes the mechanism of action of acyclovir?
• A. It blocks viral entry by binding to cell surface receptors.
• B. It inhibits viral protease, preventing maturation of virions.
• C. It suppresses synthesis of viral DNA by inhibiting DNA polymerase and
terminating chain growth.
• D. It stimulates host interferon production to block viral replication.
Answer: C. It suppresses synthesis of viral DNA by inhibiting DNA polymerase and
terminating chain growth.
, Rationale: After activation to acyclo-GTP, acyclovir inhibits viral DNA polymerase
and is incorporated into viral DNA, blocking further strand elongation .
9. Why is acyclovir selectively toxic to herpes-infected cells?
• A. It requires viral thymidine kinase for activation.
• B. It binds only to viral neuraminidase.
• C. It is actively transported into mammalian cells.
• D. It has a 200-fold greater affinity for bacterial DNA polymerase.
Answer: A. It requires viral thymidine kinase for activation.
Rationale: Acyclovir is a prodrug activated by viral thymidine kinase, an enzyme
present only in infected cells. HSV thymidine kinase has a much greater affinity for
acyclovir than mammalian thymidine kinase .
10. Oseltamivir is most effective for treating seasonal influenza when it is
started within which time frame after symptom onset?
• A. 12 hours
• B. 24 hours
• C. 48 hours
• D. 72 hours
Answer: C. 48 hours
Rationale: Oseltamivir should be started within 48 hours of influenza symptom onset
to meaningfully reduce symptom duration, severity, and complication risk .
11. A resident in a long-term-care facility is exposed to influenza. How long can
oseltamivir prophylaxis be continued for this patient?
• A. 5 days
• B. 10 days
• C. 14 days
• D. 42 days
CARE OF THE FAMILY – MIDTERM
COMPREHENSIVE EXAM PRACTICE QUESTIONS
WITH 200 VERIFIED QUESTIONS AND VERIFIED
ANSWERS PLUS RATIONALE | ALREADY
GRADED A+ | GUARANTEED PASS || MOST
RECENT
1. Which antifungal agent requires a patient to avoid simvastatin due to the
risk of rhabdomyolysis from CYP3A4 inhibition?
• A. Fluconazole
• B. Itraconazole
• C. Terbinafine
• D. Griseofulvin
Answer: B. Itraconazole
Rationale: Itraconazole potently inhibits CYP3A4, which can significantly increase
plasma concentrations of simvastatin, leading to myopathy and rhabdomyolysis .
2. What is the standard loading dose for caspofungin when treating invasive
aspergillosis?
• A. 50 mg
• B. 70 mg
• C. 100 mg
• D. 150 mg
Answer: B. 70 mg
Rationale: A loading dose of 70 mg is recommended for caspofungin to achieve
therapeutic concentrations quickly, followed by a 50 mg maintenance dose .
,3. Why might an elderly patient with achlorhydria have reduced absorption of
standard itraconazole formulations?
• A. Itraconazole requires an acidic environment for dissolution
• B. Achlorhydria increases renal clearance
• C. Gastric acid destroys itraconazole
• D. Achlorhydria induces CYP3A4 enzymes
Answer: A. Itraconazole requires an acidic environment for dissolution
Rationale: Standard itraconazole capsules require gastric acid for proper dissolution
and absorption. Patients with achlorhydria or those taking proton pump inhibitors
(PPIs) may have subtherapeutic drug levels .
4. Which statement best explains why amphotericin B must be given
intravenously for systemic mycoses?
• A. It is rapidly metabolized by the liver when taken orally.
• B. It is poorly absorbed from the gastrointestinal tract.
• C. It is inactivated by gastric acid.
• D. It causes severe esophageal irritation when swallowed.
Answer: B. It is poorly absorbed from the gastrointestinal tract.
Rationale: Amphotericin B has very poor GI absorption, so therapeutic serum levels
for systemic infections can only be achieved with IV administration .
5. Which intervention most effectively reduces the risk of amphotericin B–
induced nephrotoxicity?
• A. Premedicating with acetaminophen
• B. Administering the drug by rapid IV bolus
• C. Infusing 1 liter of normal saline on days of treatment
• D. Giving a loop diuretic before each dose
Answer: C. Infusing 1 liter of normal saline on days of treatment
Rationale: Saline loading (pre- and post-hydration) is the most effective strategy to
reduce the risk of amphotericin B-induced nephrotoxicity .
,6. A patient being treated with IV acyclovir develops rising creatinine and
decreased urine output. What is the priority nursing action?
• A. Hold the dose and notify the prescriber.
• B. Slow the infusion rate to 30 minutes.
• C. Administer a loop diuretic.
• D. Switch to oral acyclovir immediately.
Answer: A. Hold the dose and notify the prescriber.
Rationale: IV acyclovir carries a risk of renal failure. Worsening renal function
warrants holding the drug and contacting the prescriber for possible dose
adjustment .
7. Which infection is routinely treated with high-dose oral acyclovir in
immunocompetent older adults?
• A. Herpes labialis
• B. Herpes zoster (shingles)
• C. Respiratory syncytial virus
• D. Influenza A
Answer: B. Herpes zoster (shingles)
Rationale: High-dose oral acyclovir is used for varicella-zoster infections such as
shingles in immunocompetent adults. IV therapy is reserved for
immunocompromised patients .
8. Which statement best describes the mechanism of action of acyclovir?
• A. It blocks viral entry by binding to cell surface receptors.
• B. It inhibits viral protease, preventing maturation of virions.
• C. It suppresses synthesis of viral DNA by inhibiting DNA polymerase and
terminating chain growth.
• D. It stimulates host interferon production to block viral replication.
Answer: C. It suppresses synthesis of viral DNA by inhibiting DNA polymerase and
terminating chain growth.
, Rationale: After activation to acyclo-GTP, acyclovir inhibits viral DNA polymerase
and is incorporated into viral DNA, blocking further strand elongation .
9. Why is acyclovir selectively toxic to herpes-infected cells?
• A. It requires viral thymidine kinase for activation.
• B. It binds only to viral neuraminidase.
• C. It is actively transported into mammalian cells.
• D. It has a 200-fold greater affinity for bacterial DNA polymerase.
Answer: A. It requires viral thymidine kinase for activation.
Rationale: Acyclovir is a prodrug activated by viral thymidine kinase, an enzyme
present only in infected cells. HSV thymidine kinase has a much greater affinity for
acyclovir than mammalian thymidine kinase .
10. Oseltamivir is most effective for treating seasonal influenza when it is
started within which time frame after symptom onset?
• A. 12 hours
• B. 24 hours
• C. 48 hours
• D. 72 hours
Answer: C. 48 hours
Rationale: Oseltamivir should be started within 48 hours of influenza symptom onset
to meaningfully reduce symptom duration, severity, and complication risk .
11. A resident in a long-term-care facility is exposed to influenza. How long can
oseltamivir prophylaxis be continued for this patient?
• A. 5 days
• B. 10 days
• C. 14 days
• D. 42 days
